title: Antireflective surface structures in glass by self-assembly of SiO2 nanoparticles and wet etching.
abstract: We describe the fabrication of an antireflective surface structure with sub-wavelength dimensions on a glass surface using scalable low-cost techniques involving sol-gel coating, thermal annealing, and wet chemical etching. The glass surface structure consists of sand dune like protrusions with 250 nm periodicity and a maximum peak-to-valley height of 120 nm. The antireflective structure increases the transmission of the glass up to 0.9% at 700 nm, and the transmission remains enhanced over a wide spectral range and for a wide range of incident angles. Our measurements reveal a strong polarization dependence of the transmission change.
authors.forename: Thomas
authors.initials: T
authors.lastname: Maier
authors.forename: David
authors.initials: D
authors.lastname: Bach
authors.forename: Paul
authors.initials: P
authors.lastname: Müllner
authors.forename: Rainer
authors.initials: R
authors.lastname: Hainberger
authors.forename: Hubert
authors.initials: H
authors.lastname: Brückl